I have a 1984 Yamaha eln 40 horse tiller. I bought the engine as a project to help learn how to rebuild them. I rebuilt the entire powerhead one new piston all new piston rings, honed the cylinders. There was no scorching in the cylinders luckily. So I got it all done and put oil in cylinders and turned the flywheel to lube up the cylinder walls. Then I checked spark and that's strong. Engine fired right up. I haven't done a compression test yet. But I'm having some issues that I've run into a dead end on.
1. Exhaust was spitting white smoke and its oil injection so I know that's not right, put my hand behind it and smelled it off my fingers and it smelled like pure gasoline. So that means the oil pump isn't working correct? I mixed some gas 50-1 mixture of Yamalube an seemed to slightly fix the problem.
2. Cooling line works every other time. Spits water at a good stream and its hot, then I turn off motor and run again very shortly and then it doesn't spit anything at all. New impeller needed?
3. And the biggest issue. I put the engine into gear and run it(when the impeller is spitting water of course) I turn the throttle 1/4 ways and it accelerates then I turn it more and it won't accelerate anymore or even try to, engine doesn't spit or act likes its dying at all, it just won't give anymore power. This is my biggest problem I would like to figure out but I can't find nothing about it in the manual.
Thanks
1. Exhaust was spitting white smoke and its oil injection so I know that's not right, put my hand behind it and smelled it off my fingers and it smelled like pure gasoline. So that means the oil pump isn't working correct? I mixed some gas 50-1 mixture of Yamalube an seemed to slightly fix the problem.
2. Cooling line works every other time. Spits water at a good stream and its hot, then I turn off motor and run again very shortly and then it doesn't spit anything at all. New impeller needed?
3. And the biggest issue. I put the engine into gear and run it(when the impeller is spitting water of course) I turn the throttle 1/4 ways and it accelerates then I turn it more and it won't accelerate anymore or even try to, engine doesn't spit or act likes its dying at all, it just won't give anymore power. This is my biggest problem I would like to figure out but I can't find nothing about it in the manual.
Thanks